Solar super heat conduction metal vacuum tube(SHCMV Tube)Features: 1)The tube structure is between all-glass evacuated tube and metal-glass evacuatedtube with heat pipes2)Suitable for frigid zones because there is no water in the tube3)Designed for pressure system4)Heat pipe material: TP2 copper5)The heat collecting part is a vacuum glass tube that lowers heat loss6)Stable solar conversion throughout the day, with the round shaped tube allowingsolar penetration from all angles.7)Energy output within only 2 minutes of sunshine8)High efficient selective absorptive coatings and vacuum heat insulation technologyensure the tube has higher heat output in cloudy weather and in moist areas,especially in winter. producing area:China